%综合制动特性
function Fb = getMaxFb(vkmh)
% CRH380
if vkmh <= 15
    Fb = 360;
elseif vkmh <= 16
    Fb = 172*vkmh-2220;
elseif vkmh <= 70
    Fb = 532;
elseif vkmh <= 120
    Fb = -1.68*vkmh+649.6;
elseif vkmh <= 350
    Fb = -0.6522*vkmh+526.3;
end